Added configure check for broken poll() on some unix systems (MacOS X 10.3)

Fixes SF Bug #850981

Modules/selectmodule.c

@@ -318,7 +318,7 @@ select_select(PyObject *self, PyObject *args)
 	return ret;
 }
 
-#ifdef HAVE_POLL
+#if defined(HAVE_POLL) && !defined(HAVE_BROKEN_POLL)
 /* 
  * poll() support
  */
@@ -612,7 +612,7 @@ select_poll(PyObject *self, PyObject *args)
 		return NULL;
 	return (PyObject *)rv;
 }
-#endif /* HAVE_POLL */
+#endif /* HAVE_POLL && !HAVE_BROKEN_POLL */
 
 PyDoc_STRVAR(select_doc,
 "select(rlist, wlist, xlist[, timeout]) -> (rlist, wlist, xlist)\n\
@@ -639,9 +639,9 @@ On Windows, only sockets are supported; on Unix, all file descriptors.");
 
 static PyMethodDef select_methods[] = {
     {"select",	select_select, METH_VARARGS, select_doc},
-#ifdef HAVE_POLL
+#if defined(HAVE_POLL) && !defined(HAVE_BROKEN_POLL)
     {"poll",    select_poll,   METH_VARARGS, poll_doc},
-#endif /* HAVE_POLL */
+#endif /* HAVE_POLL && !HAVE_BROKEN_POLL */
     {0,  	0},			     /* sentinel */
 };
 
@@ -660,7 +660,7 @@ initselect(void)
 	SelectError = PyErr_NewException("select.error", NULL, NULL);
 	Py_INCREF(SelectError);
 	PyModule_AddObject(m, "error", SelectError);
-#ifdef HAVE_POLL
+#if defined(HAVE_POLL) && !defined(HAVE_BROKEN_POLL)
 	poll_Type.ob_type = &PyType_Type;
 	PyModule_AddIntConstant(m, "POLLIN", POLLIN);
 	PyModule_AddIntConstant(m, "POLLPRI", POLLPRI);
@@ -684,5 +684,5 @@ initselect(void)
 #ifdef POLLMSG
 	PyModule_AddIntConstant(m, "POLLMSG", POLLMSG);
 #endif
-#endif /* HAVE_POLL */
+#endif /* HAVE_POLL && !HAVE_BROKEN_POLL */
 }

configure

@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in Revision: 1.451 .
+# From configure.in Revision: 1.452 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.57 for python 2.4.
 #
@@ -17577,6 +17577,78 @@ _ACEOF
 
 fi
 
+echo "$as_me:$LINENO: checking for broken poll()" >&5
+echo $ECHO_N "checking for broken poll()... $ECHO_C" >&6
+if test "$cross_compiling" = yes; then
+  ac_cv_broken_poll=no
+else
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+#include <poll.h>
+
+int main (void)
+    {
+    struct pollfd poll_struct = { 42, POLLIN|POLLPRI|POLLOUT, 0 };
+
+    close (42);
+
+    int poll_test = poll (&poll_struct, 1, 0);
+
+    if (poll_test < 0)
+        {
+        exit(0);
+        }
+    else if (poll_test == 0 && poll_struct.revents != POLLNVAL)
+        {
+        exit(0);
+        }
+    else
+        {
+        exit(1);
+        }
+    }
+
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_broken_poll=yes
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+ac_cv_broken_poll=no
+fi
+rm -f core core.* *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_broken_poll" >&5
+echo "${ECHO_T}$ac_cv_broken_poll" >&6
+if test "$ac_cv_broken_poll" = yes
+then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_BROKEN_POLL 1
+_ACEOF
+
+fi
+
+
 # tzset(3) exists and works like we expect it to
 echo "$as_me:$LINENO: checking for working tzset()" >&5
 echo $ECHO_N "checking for working tzset()... $ECHO_C" >&6

configure.in

@@ -2765,6 +2765,43 @@ then
   [Define if nice() returns success/failure instead of the new priority.])
 fi
 
+AC_MSG_CHECKING(for broken poll())
+AC_TRY_RUN([
+#include <poll.h>
+
+int main (void)
+    {
+    struct pollfd poll_struct = { 42, POLLIN|POLLPRI|POLLOUT, 0 };
+    
+    close (42);
+
+    int poll_test = poll (&poll_struct, 1, 0);
+
+    if (poll_test < 0)
+        {
+        exit(0);
+        }
+    else if (poll_test == 0 && poll_struct.revents != POLLNVAL)
+        {
+        exit(0);
+        }
+    else
+        {
+        exit(1);
+        }
+    }
+],
+ac_cv_broken_poll=yes,
+ac_cv_broken_poll=no,
+ac_cv_broken_poll=no)
+AC_MSG_RESULT($ac_cv_broken_poll)
+if test "$ac_cv_broken_poll" = yes
+then
+  AC_DEFINE(HAVE_BROKEN_POLL, 1,
+      [Define if poll() sets errno on invalid file descriptors.])
+fi
+
+
 # tzset(3) exists and works like we expect it to
 AC_MSG_CHECKING(for working tzset())
 AC_CACHE_VAL(ac_cv_working_tzset, [

pyconfig.h.in

@@ -46,6 +46,9 @@
 /* Define if nice() returns success/failure instead of the new priority. */
 #undef HAVE_BROKEN_NICE
 
+/* Define if poll() sets errno on invalid file descriptors. */
+#undef HAVE_BROKEN_POLL
+
 /* Define if the Posix semaphores do not work on your system */
 #undef HAVE_BROKEN_POSIX_SEMAPHORES
 
@@ -435,6 +438,12 @@
 /* Define to 1 if you have the <stdint.h> header file. */
 #undef HAVE_STDINT_H
 
+/* Define to 1 if you have the <stdlib.h> header file. */
+#undef HAVE_STDLIB_H
+
+/* Define to 1 if you have the `strdup' function. */
+#undef HAVE_STRDUP
+
 /* Define to 1 if you have the `strerror' function. */
 #undef HAVE_STRERROR
 
@@ -444,6 +453,9 @@
 /* Define to 1 if you have the <strings.h> header file. */
 #undef HAVE_STRINGS_H
 
+/* Define to 1 if you have the <string.h> header file. */
+#undef HAVE_STRING_H
+
 /* Define to 1 if you have the <stropts.h> header file. */
 #undef HAVE_STROPTS_H